BIOA02H3 Lecture Notes - Lecture 6: Seed Dormancy, Adventitiousness, Coleoptile
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BIOA02H3 Full Course Notes
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Matured or ripened ovary surrounding the seeds. Fruit wall (pericarp) develops from ovary wall: thick, fleshy (peach, hard, dry (hazelnut) Helps disperse seeds by animals, wind or water. Fruits do not provide any nutrients to developing seed. Seed: endosperm, embryo, seed coat endosperm acts as a food reserve for the seed once germination begins. Often outer pericarp is fleshy & juicy but in many grains & nuts it may be thin & papery & fused to seed coat. In garden pea, peas are the seeds and the surrounding pod is the pericarp. Berry: has a thin exocarp, a soft fleshy mesocarp and an endocarp enclosing one or many seeds. Hesperidium (type of berry) citrus fruit: a berry w/ a tough, leathery rind. Pepo: specialized berry w/ a tough outer rind (made of both receptacle tissue and exocarp), mesocarp and endocarp are fleshy. E. g. all squash family pumpkins, melons, cucumbers.
